Epson 3865X Plus User Manual page 80

high-density, 135 TPI, 1.44MB diskettes. These diskettes
contain 80 tracks per side, 18 sectors per track, and hold up
to 1.44MB of information, which is approximately 600
pages of text.
double-density, 48 TPI, 360KB diskettes. (You can also use
single-sided, 160KB or 180KB diskettes.) These diskettes
contain 40 tracks per side and 8 or 9 sectors per track. With
8 sectors per track, a diskette holds up to 320KB. With 9
sectors per track, a diskette holds up to 360KB of
information, which is approximately 150 pages of text.
double-density, 135 TPI, 720KB diskettes. These diskettes
contain 80 tracks per side, 9 sectors per track, and hold up
to 720KB of information, which is approximately 300 pages
of text.
Note
You must format a new diskette before you can store data on
it. See "Formatting Diskettes," later in this section.
Drive and diskette incompatibilities
If your computer has more than one type of diskette drive, or if
you use diskettes from other computers with other types of
diskette drives, you need to be aware of certain incompatibilities
between the diskette drives and the diskettes they use.
Because of the type and size differences, you cannot use a
3 '/z-inch diskette in a 5 '/+inch drive or vice versa. There are
also certain limitations on using diskettes that are the same size
as the drive but have different capacities. The following tables
summarize the possibilities and limitations.
Using Your Computer
3-13